Chauvin Arnoux DigiFlex MA4000D-350, DigiFlex MA4000D User Manual
MA4000D
ENGLISH
SVENSKA
User's manual
Bruksanvisning
FLEXIBLE CURRENT METER
STRÖMTÅNG MED FLEXIBEL SPOLE
2
WARNING, risk of DANGER! The operator must
refer to these instructions whenever this danger
symbol appears.
Equipment protected by double insulation.
Must not be applied to or removed from bare
conductors at dangerous voltages. Type B cur‑
rent sensor as per IEC 61010‑2‑032.
Battery.
The CE marking indicates conformity with
European directives, in particular LVD and EMC.
The rubbish bin with a line through it indicates
that, in the European Union, the product must
undergo selective disposal in compliance with
Directive WEEE 2002/96/EC. This equipment
must not be treated as household waste.
Definition of measurement categories:
Measurement category IV corresponds to measurements
taken at the source of low‑voltage installations.
Measurement category III corresponds to measurements
on building installations.
Measurement category II corresponds to measurements
taken on circuits directly connected to low‑voltage
installations.
PRECAUTIONS FOR USE
This instrument is protected against voltages of not more than
1000V with respect to ground in measurement category III
or 600V in CAT IV between the sensor and the conductor of
which it measures the current.
The protection provided by the instrument may be impaired
if the instrument is used other than as specified by the
manufacturer.
Do not exceed the rated maximum voltage and current or
the measurement category.
Thank you for purchasing a DigiFLEX MA4000D current
meter with flexible sensor.
For best results from your instrument:
read this user’s manual carefully,
comply with the precautions for use.
English ................................................. 2
Svenska ............................................... 6
3
Observe the conditions of use, namely the temperature,
the relative humidity, the altitude, the level of pollution,
and the place.
Before each use, check the integrity of the insulation
on the coil, the cords and the housing. Do not use the
instrument if it is open, damaged, or poorly reassembled,
or its accessories if they appear damaged.
The sensor must not be applied to or removed from
uninsulated conductors at dangerous voltages.
Use personal protection equipment systematically.
All troubleshooting and metrological checks must be per‑
formed by competent and accredited personnel.
CONTENTS
1. PRESENTATION ...........................................................4
2. CURRENT MEASUREMENT .......................................6
2.1. Measurement principle ...................................6
2.2. Use ...................................................................6
3. CHARACTERISTICS ....................................................9
3.1. Reference conditions ......................................9
3.2. Electrical characteristics .................................9
3.3. Variations in range of use .............................10
3.4. Typical frequency response curves ..............10
3.5. Power supply .................................................11
3.8. Environmental conditions .............................11
3.7. Characteristics of construction ....................12
3.8. Compliance with international standards ....12
3.9. Electromagnetic compatibility ......................12
4. MAINTENANCE ..........................................................13
4.1. Cleaning .........................................................13
4.2. Replacement of the batteries .......................13
4.3. Metrological check ........................................13
4.4. Repair ............................................................13
5. WARRANTY ................................................................14
6. TO ORDER ..................................................................14
6.1. Accessories ...................................................14
6.2. Replacement parts ........................................14
4
1. PRESENTATION
The DigiFLEX is used for RMS measurements of current,
from 200 mA to 4000 A.
The sensor takes the form of a flexible coil 35 cm long,
connected by a shielded cord to a small housing containing
the signal processing electronics, supplied by a battery.
The flexibility of the sensors makes it easier to wrap them
round the conductor to be measured, whatever its type
(cable, bar, strand, etc.) and its accessibility. The design of
the snap‑action coil opening and closing device allows it to
be handled while wearing protective gloves.
MA 4000D
AC RMS
CURRENT METER
MAX
(>2s)
HOLD
4000 A
6
0
0
V
C
A
T
I
V
1
0
0
0
V
C
A
T
I
I
I
P
M
AX
HOLD
A
Flexible sensor.
Sensor
opening
device.
Shielded cord.
LCD display
unit.
Electronics
housing.
HOLD key.
ON/OFF key.
5
On the back of the electronics housing is a notch for the
attachment of a belt clip (optional).
The multi‑function belt clip can be used:
to carry the electronic housing on your belt,
to attach it to a
metal surface
using the built‑in
magnet,
to hook it to a door
or the edge of a
table.
6
Open it, then place it round the conductor through which
the current to be measured flows (only one conductor in
the sensor).
Close the coil.
2. CURRENT MEASUREMENT
2.1. MEASUREMENT PRINCIPLE
The flexible sensor is based on the Rogowski coil.
It combines:
very good linearity with no saturation effect (and so no
heating);
light weight (no magnetic circuit).
2.2. USE
2.2.1. CONNECTION
First of all, use the appropriate means of protection.
Press the yellow opening device to open the flexible coil.
In order to optimize measurement quality, it is best to
centre the conductor in the coil and to make the shape
of the coil as nearly circular as possible.
Press the key to switch the device on. The display
unit lights.
2.2.2. MEASUREMENT
Read the measurement on the display unit. The current is
given in A
rms
.
A
7
If the measurement exceeds the display capacity (4000 A),
the device displays 3999, blinking.
HOLD
A
MAX
A
A
A
If the measurement is too low (see § 3.2), the device displays
dashes.
If the edges of the signal are too steep or its peak factor is
too large, the device displays OL.
2.2.3. FREEZING THE MEASUREMENT
If you want to freeze the display of a measurement, press
the HOLD key.
The Max symbol is then displayed; the device starts making
measurements a few seconds later.
The device compares each new measurement to the one
displayed. If the new measurement is greater than the old, it
replaces it in the display.
To return to the real‑time display mode, press the HOLD
(MAX > 2s) key again.
A
The HOLD symbol is displayed.
The device continues to make measurements, but the display
is frozen. To release it, press the HOLD key again.
2.2.4. SEARCH FOR MAXIMUM
To search for a maximum, for example a spike lasting at
least 100 ms, press the HOLD (MAX > 2s) key for more
than two seconds.
8
2.2.5. DE-ACTIVATION OF AUTOMATIC SWITCHING OFF
In order to save the batteries, the device switches itself off
automatically at the end of 10 minutes if the user has not
pressed a key (unless the MAX function is active).
It is possible to deactivate automatic switching off. To do
this, when you switch the device on, press the and HOLD
keys simultaneously. The P symbol (lit steadily) is then dis‑
played.
A
P
To reactivate automatic switching off, switch the device off,
then back on.
2.2.6. BATTERIES LOW
When the battery voltage drops and the remaining battery
life of the device is only about one hour, the symbol
blinks on the display unit.
When the battery voltage is too low to guarantee the accu‑
racy of the measurements, the symbol lights steadily.
The batteries must then be replaced (see § 4.2).
2.2.7. DISCONNECTING
Switch the device off by pressing the key.
Press the yellow opening device to open the flexible core.
Remove the flexible core from the conductor.
9
3. CHARACTERISTICS
3.1. REFERENCE CONDITIONS
Quantity of influence Reference values
Temperature 23 ± 3°C
Relative humidity 45 to 75% RH
Frequency of the signal measured 40 to 65 Hz
Peak factor of the signal measured √2
Conductor diameter ≤ 5 mm
Battery voltage 2.8 ‑ 3.2 V
External electric field none
External DC magnetic field (earth
field)
<40 A/m
External AC magnetic field none
Position of the conductor
centred in the
measurement coil
Shape of the measurement coil nearly circular
3.2. ELECTRICAL CHARACTERISTICS
Display range (A) 40 400 4000
Specified measure‑
ment range (A)
0.20 ‑
39.99
40.0 ‑
399.9
400 ‑
3999
Resolution 10 mA 100 mA 1 A
Intrinsic uncertainty
±(2%
+ 10 ct)
±(1.5%
+ 2 ct)
±(1.5%
+ 2 ct)
In MAX mode:
Display range (A) 40 400 4000
Specified measure‑
ment range (A)
1.00 ‑
39.99
40.0 ‑
399.9
400 ‑
3999
Resolution 10 mA 100 mA 1 A
Typical error
±(2%
+ 10 ct)
±(1.5%
+ 2 ct)
±(1.5%
+ 2 ct)
10
3.3. VARIATIONS IN RANGE OF USE
Quantity of influence Range of influence
Error on the measurement
Typical Maximum
Battery voltage
1.8 to 2 V
< 1 ct ±(2% + 1 ct)
Temperature 0 to 50 °C
± 0.25 % / 10 °C ±( 0.5 % / 10 °C + 2 ct)
Relative humidity 10 to 90% RH
0.2% ± (0.3 % + 2 ct)
Frequency response
10 to 20 Hz
20 Hz to 30 Hz
30 Hz to 400 Hz
400 to 1000 Hz
1000 to 3000 Hz
See § 3.4
± (5 % + 1 ct)
± (1 % + 1 ct)
± (0.5 % + 1 ct)
± (6 % + 1 ct)
‑ 3 dB typical
Position of the conductor in
the sensor (f<400 Hz)
Any position on the interior
perimeter of the sensor
± 0.5 % ± (1.5 % ± 1 ct)
Adjacent conductor
carrying alternating current
Conductor touching the ex‑
terior perimeter of the sensor
Away from opening: 55 dB
At opening: 55 dB
Away from opening: ≥ 45 dB
At opening: ≥ 45 dB
Peak factor
1.4 to 3.5
limited to 6000 Apeak
at 16.66 Hz : ± (2 % + 1 ct)
at 50 Hz : ± (0.5 % + 1 ct)
at 440 Hz : ± (30 % + 1 ct)
± (6 % + 1 ct)
± (3 % + 1 ct)
‑
Serial mode rejection ratio
in AC
0 to 400 A
dc < 1 ct ≥ 50 dB
Common mode rejection,
50/60 Hz
0 to 600 V
rms < 1 ct ≥ 60 dB
Influence of a 50/60 Hz ex‑
ternal magnetic field
0 to 400 A/m
Housing: 43 dB
Sensor: 50 dB
Housing: ≥ 30 dB
Sensor: ≥ 40 dB
3.4. TYPICAL FREQUENCY RESPONSE CURVES
at 39 A
ac
-50 %
-40 %
-30 %
-20 %
-10 %
0 %
10 %
10 Hz 100 Hz 1000 Hz 10000 Hz
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